<template>
   <div>
      <!-- 面包屑导航区区域 -->
      <el-breadcrumb separator-class="el-icon-arrow-right">
         <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
         <el-breadcrumb-item>用户管理</el-breadcrumb-item>
         <el-breadcrumb-item>用户列表</el-breadcrumb-item>
      </el-breadcrumb>

      <!-- 卡片视图区域 -->
      <el-card>
         <!-- 搜索与添加区域 -->
         <el-row :gutter="20">
            <el-col :span="8">
               <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
                  <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
               </el-input>
            </el-col>
            <el-col :span="4">
               <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
            </el-col>
         </el-row>

         <!-- 用户列表区域 -->
         <el-table :data="userlist" border stripe>
            <el-table-column type="index" label="#"></el-table-column>
            <el-table-column label="姓名" prop="username"></el-table-column>
            <el-table-column label="邮箱" prop="email"></el-table-column>
            <el-table-column label="电话" prop="mobile"></el-table-column>
            <el-table-column label="角色" prop="role_name"></el-table-column>
            <el-table-column label="状态">
               <template v-slot="scope">
                  <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch>
               </template>
            </el-table-column>
            <el-table-column label="操作" width="180">
               <template v-slot="scope">
                  <!-- 修改按钮 -->
                  <el-button size="mini" type="primary" icon="el-icon-edit" @click="showEditDialog(scope.row.id)">
                  </el-button>
                  <!-- 删除按钮 -->
                  <el-button size="mini" type="danger" icon="el-icon-delete" @click="removeUserById(scope.row.id)">
                  </el-button>
                  <!-- 分配角色按钮 -->
                  <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
                     <el-button size="mini" type="warning" icon="el-icon-setting" @click="setRole(scope.row)">
                     </el-button>
                  </el-tooltip>
               </template>
            </el-table-column>
         </el-table>

         <!-- 分页区域 -->
         <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange"
            :current-page="queryInfo.pagenum" :page-sizes="[1, 2, 5, 10]" :page-size="queryInfo.pagesize"
            layout="total, sizes, prev, pager, next, jumper" :total="total">
         </el-pagination>

         <!-- 添加用户的对话框 -->
         <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
            <!-- 内容主体区 -->
            <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
               <el-form-item label="用户名" prop="username">
                  <el-input v-model="addForm.username"></el-input>
               </el-form-item>
               <el-form-item label="密码" prop="password">
                  <el-input v-model="addForm.password"></el-input>
               </el-form-item>
               <el-form-item label="邮箱" prop="email">
                  <el-input v-model="addForm.email"></el-input>
               </el-form-item>
               <el-form-item label="手机" prop="mobile">
                  <el-input v-model="addForm.mobile"></el-input>
               </el-form-item>
               <!-- <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
               <el-form-item v-for="item in addForm" :key="item.label" :label="item.label">
                  <el-input v-model="addForm.label"></el-input>
               </el-form-item>
            </el-form> -->
            </el-form>
            <!-- 底部区域 -->
            <span slot="footer" class="dialog-footer">
               <el-button @click="addDialogVisible = false">取 消</el-button>
               <el-button type="primary" @click="addUser">确 定</el-button>
            </span>
         </el-dialog>

         <!-- 修改用户的对话框 -->
         <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="30%" @close="editDialogClosed">
            <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
               <el-form-item label="用户名">
                  <el-input v-model="editForm.username" disabled></el-input>
               </el-form-item>
               <el-form-item label="邮箱" prop="email">
                  <el-input v-model="editForm.email"></el-input>
               </el-form-item>
               <el-form-item label="手机" prop="mobile">
                  <el-input v-model="editForm.mobile"></el-input>
               </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
               <el-button @click="editDialogVisible = false">取 消</el-button>
               <el-button type="primary" @click="editUserInfo">确 定</el-button>
            </span>
         </el-dialog>
      </el-card>

      <!-- 分配角色的对话框 -->
      <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="30%" @close="setRoleDialogClosed">
         <div>
            <p>当前的用户：{{ userInfo.username }}</p>
            <p>当前的角色：{{ userInfo.role_name }}</p>
            <p>分配新角色：
               <el-select v-model="selectedRoleId" placeholder="请选择">
                  <el-option v-for="item in rolesList" :key="item.id" :label="item.roleName" :value="item.id">
                  </el-option>
               </el-select>
            </p>
         </div>
         <span slot="footer" class="dialog-footer">
            <el-button @click="setRoleDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
         </span>
      </el-dialog>
   </div>
</template>

<script>
export default {
   name: 'Users',
   data() {
      // 验证邮箱的规则
      var checkEmail = (rule, value, cb) => {
         // 验证邮箱的正则表达式
         const regEmail = /^([a-zA-z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
         if (regEmail.test(value)) {
            // 合法的邮箱
            return cb()
         }
         cb(new Error('请输入合法的邮箱'))
      }
      // 验证手机号的规则
      var checkMobile = (rule, value, cb) => {
         const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
         if (regMobile.test(value)) {
            // 合法的手机号
            return cb()
         }
         cb(new Error('请输入合法的手机号'))
      }
      return {
         // 获取用户列表的参数对象
         queryInfo: {
            query: '',
            // 当前的页数
            pagenum: 1,
            // 当前每页显示多少条数据
            pagesize: 5,
         },
         userlist: [],
         total: 0,
         addDialogVisible: false,
         // 添加用户的表单数据
         addForm: {
            username: '',
            password: '',
            email: '',
            mobile: '',
         },
         // 添加表单的验证规则对象
         addFormRules: {
            username: [
               { required: true, message: '请输入用户名', trigger: 'blur' },
               { min: 3, max: 10, message: '用户名的长度在3~10位之间', trigger: 'blur' }
            ],
            password: [
               { required: true, message: '请输入密码', trigger: 'blur' },
               { min: 6, max: 15, message: '用户名的长度在6~15位之间', trigger: 'blur' }
            ],
            email: [
               { required: true, message: '请输入邮箱', trigger: 'blur' },
               { validator: checkEmail, trigger: 'blur' }
            ],
            mobile: [
               { required: true, message: '请输入手机号', trigger: 'blur' },
               { validator: checkMobile, trigger: 'blur' }
            ],
         },
         // 控制修改用户对话框的显示与隐藏
         editDialogVisible: false,
         // 查询到的用户信息对象
         editForm: {},
         // 修改表单的验证规则对象
         editFormRules: {
            email: [
               { required: true, message: '请输入用户邮箱', trigger: 'blur' },
               { validator: checkEmail, trigger: 'blur' }
            ],
            mobile: [
               { required: true, message: '请输入用户手机号', trigger: 'blur' },
               { validator: checkMobile, trigger: 'blur' }
            ],
         },
         // 控制分配角色对话框的显示和隐藏
         setRoleDialogVisible: false,
         // 需要被分配角色的用户信息
         userInfo: {},
         // 所有角色的数据列表
         rolesList: [],
         // 已选中的角色ID值
         selectedRoleId: ''
      }
   },
   methods: {
      // 获取用户列表数据
      async getUserList() {
         const { data: res } = await this.$http.get('users', { params: this.queryInfo })
         // console.log(res);
         if (res.meta.status !== 200) {
            return this.$message.error('获取用户列表失败')
         }
         this.userlist = res.data.users
         this.total = res.data.total
         console.log(res);
      },
      // 监听pagesize改变的事件
      handleSizeChange(newSize) {
         // console.log(newSize);
         this.queryInfo.pagesize = newSize
         // 页码改变的时候获取当前页数最新的数据
         this.getUserList()
      },
      // 监听 页码值 改变的事件
      handleCurrentChange(newPage) {
         // console.log(newPage);
         this.queryInfo.pagenum = newPage
         // 当前页显示数量改变的时候获取最新的数据
         this.getUserList()
      },
      // 监听switch开关状态的改变
      async userStateChanged(userinfo) {
         // console.log(userinfo);
         const { data: res } = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
         if (res.meta.status !== 200) {
            userinfo.mg_state = !userinfo.mg_state
            return this.$message.error('更新用户状态失败')
         }
         this.$message.success('更新用户状态成功')
      },
      // 监听添加用户对话框的关闭事件
      addDialogClosed() {
         this.$refs.addFormRef.resetFields()
      },
      // 点击按钮，添加新用户
      addUser() {
         this.$refs.addFormRef.validate(async valid => {
            if (!valid) return
            // 可以发起添加用户的网络请求
            const { data: res } = await this.$http.post('users', this.addForm)
            if (res.meta.status !== 201) {
               this.$message.error('添加用户失败！')
            }
            this.$message.success('添加用户成功！')
            // 隐藏添加用户的对话框
            this.addDialogVisible = false
            // 重新获取用户列表的数据
            this.getUserList()
         })
      },
      // 展示编辑用户的对话框
      async showEditDialog(id) {
         // console.log(id);
         const { data: res } = await this.$http.get('users/' + id)
         if (res.meta.status != 200) {
            return this.$message.error('查询用户信息失败')
         }

         this.editForm = res.data
         this.editDialogVisible = true
      },
      // 监听修改用户对话框的关闭事件
      editDialogClosed() {
         this.$refs.editFormRef.resetFields()
      },
      // 修改用户信息并提交
      editUserInfo() {
         this.$refs.editFormRef.validate(async valid => {
            if (!valid) return
            // 发起修改用户信息的数据请求
            const { data: res } = await this.$http.put('users/' + this.editForm.id, {
               email: this.editForm.email,
               mobile: this.editForm.mobile
            })
            if (res.meta.status != 200) {
               return this.$message.error('更新用户信息失败')
            }
            // 关闭对话框
            this.editDialogVisible = false
            // 刷新数据列表
            this.getUserList()
            // 提示修改成功
            this.$message.success('更新用户信息成功')
         })

      },
      // 根据id删除对应用户的信息
      async removeUserById(id) {
         // console.log(id);
         // 弹框询问用户是否删除信息
         const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
            confirmButtonText: '确定',
            cancelButtonText: '取消',
            type: 'warning'
         }).catch(error => error)
         // 如果用户确认返回删除 则返回值为字符串 confirm
         // 如果用户取消删除 则返回值为字符串 cancel
         // console.log(confirmResult);
         if (confirmResult !== 'confirm') {
            return this.$message.info('已取消删除')
         }
         const { data: res } = await this.$http.delete('users/' + id,)
         if (res.meta.status !== 200) {
            return this.$message.error('删除用户失败！')
         }
         this.$message.success('删除用户成功')
         this.getUserList()
      },
      // 展示分配角色的对话框
      async setRole(userInfo) {
         this.userInfo = userInfo
         // 在展示对话框之前，获取所有角色的列表
         const { data: res } = await this.$http.get('roles')
         if (res.meta.status !== 200) {
            return this.$message.error('获取角色列表失败！')
         }
         this.rolesList = res.data
         this.setRoleDialogVisible = true
      },
      // 点击按钮，分配角色
      async saveRoleInfo() {
         if (!this.selectedRoleId) {
            return this.$message.error('请选择要分配的角色！')
         }
         const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, { rid: this.selectedRoleId })
         // console.log(res);
         if (res.meta.status !== 200) {
            return this.$message.error('更新角色失败！')
         }

         this.$message.success('更新角色成功')
         this.getUserList()
         this.setRoleDialogVisible = false
      },
      setRoleDialogClosed() {
         this.selectedRoleId = ''
         this.userInfo = {}
      }
   },
   created() {
      this.getUserList()
   },
}
</script>

<style lang="less" scoped>
</style>